phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d967761a98c03e1befb6816db9121aa8', -1, 1713892839, 1713892839, '0380c758', -10, 0, 0)

Line : 187
File : sessions.php